Arcuate Edge Protector for Impact and Axial Strength
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Solution Overview
Problem
Existing edge protectors for shipping and storage are often costly, environmentally impactful, and provide insufficient protection against impact and axial loads, with many requiring excessive materials and complexity, and lacking in stack strength for palletized products.
Innovation Solution
An edge protector with a pair of interior walls integrally joined at an angle, featuring arcuate exterior walls that provide enhanced impact protection and axial strength, allowing for a compact storage configuration and scalable design suitable for various article sizes, manufactured from materials like paper, molded pulp, plastic, or metal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If more materials and complex structures are used to improve impact resistance, then protection performance is improved, but packaging cost and environmental impact increase
Solution Approach 1:
The edge protector employs arcuate walls with specific radii of curvature that are at least 1.5 times the radius of the article edge. This curvature distributes impact forces more effectively across the structure, providing superior impact resistance without requiring additional materials or complex assembly mechanisms.
Solution Approach 2:
The edge protector is divided into distinct functional segments: interior walls for axial load bearing, exterior walls for structural support, and arcuate walls for impact absorption. This segmentation allows each component to be optimized for its specific function, achieving high impact resistance through simple geometric forms rather than complex integrated structures.
2Strength
If more materials are used to improve impact protection, then protection performance is improved, but material usage and cost increase
Solution Approach 1:
The edge protector utilizes thin-walled arcuate structures that bend and deform elastically during impact events, absorbing energy through controlled deformation rather than requiring thick, material-intensive construction. The arcuate geometry provides structural strength with minimal material thickness.
Solution Approach 2:
The design changes the geometric parameters of the protector walls, specifically using arcuate shapes with radii at least 1.5 times the article edge radius. This parameter optimization allows the same material to provide enhanced impact protection through improved geometric efficiency rather than increased material quantity.
3Ease of manufacture
If basic materials are used to reduce cost, then manufacturing cost is reduced, but axial strength and stack strength are insufficient
Solution Approach 1:
The arcuate walls with large radii of curvature provide inherent structural strength that enhances axial load-bearing capacity. The curved geometry resists buckling and deformation under compression, allowing basic materials to achieve superior axial strength without requiring expensive high-performance materials.
Solution Approach 2:
The edge protector combines multiple wall types (interior, exterior, and arcuate) into a composite structure where each wall type contributes different strength characteristics. This composite arrangement provides enhanced axial and stack strength using conventional materials rather than requiring advanced material science solutions.
4Strength
If complex structures are used to improve impact resistance, then protection performance is improved, but environmental impact increases
Solution Approach 1:
The arcuate wall design provides superior impact resistance through geometric efficiency, reducing the need for material-intensive construction. This simpler, more efficient structure reduces material consumption and associated environmental impacts from material production, transportation, and disposal.
Solution Approach 2:
By optimizing the geometric parameters (arc radii at least 1.5 times article edge radius), the design achieves high impact protection with minimal material usage, thereby reducing the environmental footprint associated with material extraction, manufacturing, and end-of-life disposal.
5Ease of manufacture
If basic edge protectors are used to reduce cost, then manufacturing cost is reduced, but protection against impact is insufficient
Solution Approach 1:
The arcuate walls with optimized radii provide superior impact absorption through elastic deformation, protecting article edges from damage. This geometric solution maintains manufacturing simplicity while dramatically improving impact protection performance compared to basic straight-walled protectors.
Solution Approach 2:
The thin-walled arcuate structure functions as a flexible protective shell that absorbs impact energy through controlled bending and rebound, providing effective edge protection without requiring thick, rigid, or expensive materials that would compromise manufacturability.
Data Source
AI summary
An edge protector for disposition along an angled edge of an article includes a pair of interior walls; the walls being integrally joined in angular relation to one another at an interior edge when the angle edge protector is in an in-use configuration disposed along the angled edge of the article; a first exterior wall connected to an end of one of the pair of interior walls; and, a first arcuate wall having a first end integrally joined with the first exterior wall, the first arcuate wall having a curvature such that a second end of the first arcuate wall is proximate the interior edge when the angle edge protector is in the in-use configuration. Preferably, there are two arcuate portions, and the edge protector is symmetrical.